Influência da Variabilidade Climática sobre a Erosividade em Belém (PA)

Costa, Carlos Eduardo Aguiar de Souza; Blanco, Cláudio José Cavalcante

doi:10.1590/0102-7786333010

Cited by 12 publications

(10 citation statements)

References 27 publications

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“…The EN of 1997-1998 was the one with the most marked climatic impacts around the globe, and it developed rapidly and decayed abruptly (McPhaden, 1999). The 2015-2016 EN presented sea-surface temperature indices much higher than those of previous events, with strong influences on the Amazon, especially in the eastern part (Costa and Blanco, 2018;Tavares et al, 2018). The two LN events overall had point impacts throughout the Amazon region (Aguiar et al, 2019;Coutinho et al, 2019).…”

Section: Resultsmentioning

confidence: 99%

Response of Water Balance Components to Changes in Soil Use and Vegetation Cover Over Three Decades in the Eastern Amazon

et al. 2021

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Impacts on global water resources may be intensifying due to the growing and differentiated forms of land use and occupation, which influence the water cycle and thus the maintenance of life. In the Amazon, the effect may be even worse, as it is one of the world's most vulnerable regions to these changes. This work aimed to analyze the response of the components of the water balance to changes in land use and cover in the Eastern Amazon over three decades (1980–2013). First, soil texture maps were prepared. These combined with the classes of use in each decade let us estimate the values of storage and variation in storage (ΔS) of water in the soil. The behavior of the components of the water balance [precipitation, potential evapotranspiration, actual evapotranspiration (E), and ΔS] were analyzed according to the Budyko model on the annual scale as a function of the aridity and evaporative indices. For the seasonal scale, a new parameter (y0) was introduced to explicitly represent the additional water available for E, in addition to instantaneous precipitation. The seasonality of the rains and the seasonal dynamics of storage were directly incorporated into the model developed, which allowed us to understand what the dominant control factors of water balance are. In the decade from 2000 to 2009, the remaining forest cover is only 48.91%, while the cover formed by pasture is 50.47%, meaning the water storage capacity in the soil decreased 8.1%. In the 1990s, to 1999, precipitation shows a reduction, probably as a reflection of the very strong events of La Niña and El Niño (1988–1989 and 1997–1998). Observing the sum of the surface area of water bodies in the region and the relationship of forest vs. pasture, it is possible to infer that the elevation in evapotranspiration is more related to the increase in evaporation due to the increase in the pasture area than to the reduction transpiration due to forest loss, reinforcing the hypothesis that evapotranspiration increases with pasture area.

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Section: Resultsmentioning

confidence: 99%

Response of Water Balance Components to Changes in Soil Use and Vegetation Cover Over Three Decades in the Eastern Amazon

et al. 2021

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“…Os aspectos climáticos citados acima são característicos da região do estudo, que apresenta uma homogeneidade sazonal de temperatura e umidade do ar. A cidade de Belém caracteriza-se por apresentar temperatura anual e umidade do ar média em torno de 26 °C e 84%, respectivamente, e precipitação pluvial média entre 3.000 e 4.000 mm (Costa & Blanco, 2018).…”

Section: Resultsunclassified

Segurança dos alimentos: influência sazonal na contaminação parasitária em alface (Lactuca sativa L.) comercializada em feiras livres de Belém, Pará

Medeiros

Oliveira

Málaga

2019

Braz. J. Food Technol.

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Resumo O consumo de vegetais in natura no Brasil e no mundo vem apresentando um crescimento significativo. Dentre estes alimentos, a alface crespa (Lactuca sativa L.) é a hortaliça folhosa de maior consumo no país, pois se adequa a diversos tipos de dieta e apresenta baixo valor calórico. Entretanto, a preferência por este tipo de alimentos e seus benefícios pode expor os consumidores ao risco de contrair infecções por diversos patógenos. O presente estudo objetivou avaliar a influência da sazonalidade no grau de contaminação parasitária em alfaces crespas comercializadas em quatro feiras livres do município de Belém-PA. Um total de 120 exemplares de alfaces foram adquiridas aleatoriamente nas feiras municipais de Belém, durante a estação seca e chuvosa, as quais foram processadas e analisadas individualmente pelo método de sedimentação espontânea. Observou-se que o nível de contaminação da hortaliça foi similar nos distintos períodos sazonais, sendo de 36,7% durante o período de seca e 38,7% na estação chuvosa. A contaminação parasitária mista, detectada especialmente no período chuvoso, sugere que os índices pluviométricos podem influenciar no aumento do número de espécies de parasitos que potencialmente podem afetar a população. Os resultados demonstraram uma elevada contaminação por agentes parasitários em todas as feiras que comercializavam a hortaliça. As principais estruturas parasitárias detectadas foram ovos de Ascaris sp., Ancylostoma sp., Strongyloides sp., Enterobius vermiculares, Taenia sp., oocisto de Toxoplasma gondii, além de diversas sujidades. O estudo identificou uma taxa moderada de contaminação por helmintos e protozoários de alfaces comercializadas nas feiras livres no município de Belém, evidenciando o contínuo risco de infecção parasitária humana através do consumo de hortaliças cruas, o que justifica a implementação de medidas que propiciem uma melhora na qualidade higiênico-sanitária.

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“…High humidity and heat favor the formation of convective clouds, coupled with weather phenomena, breeze circulations, causing high annual precipitation rates, ranging from 3.000 to 4.000 mm (COSTA et al, 2018).…”

Section: Methodsmentioning

confidence: 99%

IoT sensory platform for monitoring temperature, relative humidity of the air and CO2 in situ

Rodrigues

Silva

Pantoja

et al. 2022

RICA

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This article addresses the development of a sensory platform capable of measuring temperature, relative humidity, and carbon dioxide. The system is based on concepts of an IoT (Internet of Things) platform using the ESP8266 microcontroller connected to DHT21 and CSS811 sensors, the power system has lithium batteries. An App (Application) in Blynk technology was used to display the collected information and georeferenced the data, which in turn are stored in a digital cloud. Two experiments were carried out to determine the environmental quality in a forest and urban area within Belém, showing the quality of the developed system and the influence that trees have on air quality in relation to carbon dioxide and thermal comfort. Furthermore, a reformulation of the urban public transportation system must be employed, enabling it to be used in an efficient and less polluting way, since transportation is the leading emitter of pollutants that contribute to the greenhouse effect and aggravates factors related to public health. The description of the developed device allows its reproducibility and has as main differentials: optimized power system, possibility of integration with renewable energies, low cost platform; connection with several sensors; easy programming and operation; internet access and, last but not least, low cost.

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Influência da Variabilidade Climática sobre a Erosividade em Belém (PA)

Cited by 12 publications

References 27 publications

Response of Water Balance Components to Changes in Soil Use and Vegetation Cover Over Three Decades in the Eastern Amazon

Response of Water Balance Components to Changes in Soil Use and Vegetation Cover Over Three Decades in the Eastern Amazon

Segurança dos alimentos: influência sazonal na contaminação parasitária em alface (Lactuca sativa L.) comercializada em feiras livres de Belém, Pará

IoT sensory platform for monitoring temperature, relative humidity of the air and CO2 in situ

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